Joint explosion-proof device for aluminum magnesium alloy cable

Abstract

A connector explosion-proof device for an aluminum magnesium alloy cable comprises an upper shell and a lower shell, fixing plates are arranged on the two sides of the upper shell and the two sides of the lower shell, and the two fixing plates which correspond to each other up and down are fixedly connected through a plurality of bolts, and the connector explosion-proof device is characterized in that an upper righting assembly is installed in the upper shell, and a lower righting assembly is installed in the lower shell. An upper righting assembly is installed in the upper shell, a lower righting assembly is installed in the lower shell, the upper righting assembly and the lower righting assembly are correspondingly arranged in position, and an anti-explosion fire-retardant bag and a sealing ring are sequentially arranged at ports of the two ends of the upper shell and the lower shell from inside to outside after the upper shell and the lower shell are connected. The upper centralizing assembly and the lower centralizing assembly which are used for centralizing the cable connector are installed in the upper shell and the lower shell, the cable connector is effectively prevented from deviating through the centralizing assemblies, and the upper centralizing assembly and the lower centralizing assembly are both installed in the shell in a screw fixing mode. The cable centralizer is suitable for centralizing cable joints formed after cables of different sizes are connected.

Description

Technical Field

[0001] This utility model relates to the technical field of explosion-proof equipment for cable joints, and in particular to an explosion-proof device for aluminum-magnesium alloy cable joints. Background Technology

[0002] During urban construction, for aesthetic and safety reasons, an increasing number of high-voltage overhead lines are being buried underground, with cable trenches and ducts laid. Since most cables are made of aluminum-magnesium alloy, the limited length of a single cable during long-distance laying often requires one or more joints to extend the length and meet power supply requirements. This results in cable joints, which are the weakest points in the cable. Cable joints are susceptible to moisture intrusion, mechanical stress, and other external forces, leading to insulation damage and potentially causing a breakdown and explosion. Therefore, explosion-proof boxes are now required at cable joints for explosion protection.

[0003] However, existing explosion-proof boxes still have some problems during installation and use. The cable joints are placed directly into the two shells of the explosion-proof box. Due to the lack of a straightening and support mechanism for the cable joints, the cable joints inside the explosion-proof box are prone to tilting, resulting in unstable connection at the cable joint. Therefore, an explosion-proof device for aluminum-magnesium alloy cable joints is proposed. Utility Model Content

[0004] In view of the above-mentioned technical problems, this utility model provides an explosion-proof device for aluminum-magnesium alloy cable joints. By installing a straightening component in a detachable manner inside the upper and lower housings, the offset at the cable joint can be reduced, and the installation requirements of cable joints for cables of different sizes can be met.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An explosion-proof device for an aluminum-magnesium alloy cable connector includes an upper housing and a lower housing. Fixing plates are provided on both sides of both the upper and lower housings, and the two corresponding fixing plates are fixedly connected by multiple bolts. The device is characterized in that an upper straightening component is installed inside the upper housing, and a lower straightening component is installed inside the lower housing. The upper and lower straightening components are positioned correspondingly. At both ends of the connection between the upper and lower housings, an explosion-proof flame arrestor and a sealing ring are sequentially installed from the inside out.

[0007] The upper housing is provided with a filling port for injecting sealant, and a sealing cap is threaded onto the filling port.

[0008] The upper straightening assembly consists of an upper fixed plate, an upper support inclined plate, and an upper straightening clamping plate. The bottom of the upper fixed plate is attached to the inner wall of the upper housing, and the upper fixed plate is fixed inside the upper housing by screws. The upper straightening clamping plate is located above the upper fixed plate, and the upper straightening clamping plate is fixed to the upper fixed plate by the upper support inclined plate. Limiting slots are provided at both ends of the upper straightening clamping plate.

[0009] The lower straightening assembly consists of a lower fixed plate, a lower support inclined plate, and a lower straightening clamping plate. The bottom of the lower fixed plate is attached to the inner wall of the lower housing. The lower fixed plate is fixedly installed inside the lower housing by screws. The lower straightening clamping plate is provided above the lower fixed plate. The lower straightening clamping plate is fixed to the lower fixed plate by the lower support inclined plate. Insert blocks are provided at both ends of the lower straightening clamping plate.

[0010] The insert is adapted to the limiting slot and is inserted into the limiting slot.

[0011] Furthermore, a cable connector is installed in the inner cavity after the upper and lower housings are fixedly connected, and two cables extend from the ports at both ends of the connection between the upper and lower housings.

[0012] Furthermore, the inner surface of the sealing ring abuts against the outer wall of the cable.

[0013] Furthermore, the cable connector is adapted to the upper and lower straightening clamps and is located between the upper and lower straightening clamps.

[0014] Furthermore, sealing tape is wrapped around the outer side of the ports at both ends of the upper and lower housings after they are connected, which enhances the sealing performance of the ports after the upper and lower housings are connected.

[0015] The beneficial effects of this utility model are:

[0016] This utility model installs an upper straightening component and a lower straightening component inside the upper and lower housings for straightening cable joints. The straightening components effectively prevent the cable joints from shifting. Both the upper and lower straightening components are installed in the housing by screws, which allows the straightening components to be detached and installed. This allows for the replacement of straightening components with straightening clamps of different sizes to meet the straightening needs of cable joints formed after connecting cables of different sizes.

[0017] The upper straightening clamp plate in the upper straightening component and the lower straightening clamp plate in the lower straightening component of this utility model are connected by insert blocks and limiting slots to facilitate the easy splicing of the two corresponding straightening components when they are docked.

[0018] This invention features explosion-proof flame arresters and sealing rings arranged sequentially from the inside to the outside at both ends of the upper and lower housings after they are connected. The explosion-proof flame arresters expand and solidify under high temperature conditions, thereby preventing the spread of flames and the occurrence of an explosion inside the explosion-proof device. The sealing rings enhance the sealing of the cable outlet on the explosion-proof device. Sealant is injected into the explosion-proof device through the glue injection port, effectively preventing water from entering the explosion-proof device and causing the cable to become damp. Attached Figure Description

[0019] Figure 1 This is a cross-sectional schematic diagram of the explosion-proof device for aluminum-magnesium alloy cable connectors of this utility model during use;

[0020] Figure 2 This is an exploded structural diagram of an explosion-proof device for an aluminum-magnesium alloy cable connector according to the present invention.

[0021] Figure 3 This is a schematic diagram of the structure at point A of the explosion-proof device for aluminum-magnesium alloy cable connectors according to this utility model;

[0022] Figure 4 This is a side view of the disassembly of an explosion-proof device for an aluminum-magnesium alloy cable connector according to this utility model.

[0023] Figure 5 This is a schematic diagram of the structure at point B of the explosion-proof device for an aluminum-magnesium alloy cable connector according to this utility model;

[0024] As shown in the figure: 100. Aluminum-magnesium alloy cable, 101. Cable connector, 1. Upper shell, 11. Glue potting, 2. Lower shell, 12. Fixing plate, 31. Upper fixing plate, 32. Upper support inclined plate, 33. Upper straightening clamp, 331. Limiting slot, 41. Lower fixing plate, 42. Lower support inclined plate, 43. Lower straightening clamp, 431. Insert block, 5. Sealing ring, 6. Explosion-proof fire arrestor bag, 7. Sealing tape, 8. Sealing cover. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Example 1

[0029] As shown in the figure, both sides of the upper housing 1 and the lower housing 2 are provided with fixing plates 12, and the two corresponding fixing plates 12 are fixedly connected by multiple bolts. The upper housing 1 is provided with a glue inlet 11 for injecting sealant, and a sealing cap 8 is threadedly installed at the glue inlet. An upper straightening component is installed inside the upper housing 1, and a lower straightening component is installed inside the lower housing 2. The upper and lower straightening components are positioned correspondingly to each other.

[0030] In the upper straightening assembly, the bottom of the upper fixing plate 31 is attached to the inner wall of the upper housing 1, and the upper fixing plate 31 is fixedly installed inside the upper housing 1 by screws. An upper straightening clamping plate 33 is provided above the upper fixing plate 31, and the upper straightening clamping plate 33 is fixed to the upper fixing plate 31 by an upper supporting inclined plate 32. Limiting slots 331 are provided at both ends of the upper straightening clamping plate 33. In the lower straightening assembly, the bottom of the lower fixing plate 41 is attached to the inner wall of the lower housing 2, and the lower fixing plate 41 is fixedly installed by screws. The lower fixing plate 41 is installed in the lower housing 2. The lower fixing plate 43 is provided above the lower fixing plate 41. The lower fixing plate 43 is fixed to the lower fixing plate 41 by the lower support inclined plate 42. The two ends of the lower fixing plate 43 are respectively provided with inserts 431. The inserts 431 are adapted to the limiting slots 331 on the upper fixing plate 33. In use, the inserts 431 are inserted into the limiting slots 331. The insertion of the inserts 431 and the limiting slots 331 facilitates the easy splicing of the two corresponding sets of fixing components when they are connected.

[0031] A cable connector 101 is installed in the inner cavity after the upper shell 1 and the lower shell 2 are fixedly connected. The cable connector 101 is adapted to the upper straightening clamp 33 and the lower straightening clamp 43 and is located between the upper straightening clamp 33 and the lower straightening clamp 43. Two cables 100 extend from the ports at both ends of the connection between the upper shell 1 and the lower shell 2. Explosion-proof fire arresters 6 and sealing rings 5 ​​are arranged sequentially from the inside to the outside at the ports at both ends of the connection between the upper shell 1 and the lower shell 2. The inner surface of the sealing ring 5 abuts against the outer wall of the cable 100. Sealing tape is wrapped around the outside of the ports at both ends of the connection between the upper shell and the lower shell to enhance the sealing performance of the ports at the connection between the upper shell and the lower shell.

[0032] The explosion-proof flame arrestor 6 expands and solidifies under high temperature conditions, thereby preventing the spread of flames and the occurrence of explosions inside the explosion-proof device. The sealing ring 5 enhances the sealing of the cable outlet on the explosion-proof device. The sealant is injected into the explosion-proof device through the glue injection port 11, thereby effectively preventing water from entering the explosion-proof device and causing the cable to become damp.

[0033] Example 2

[0034] When using the explosion-proof device designed in this utility model, firstly, a suitable straightening clamp is matched according to the size of the cable joint 101 at the connection of the two cables 100, and then the upper straightening component is fixed in the upper housing 1 with screws, and the lower straightening component is fixed in the lower housing 2 with screws.

[0035] During installation, first place the sealing rings 5 ​​and lay the explosion-proof flame arresters 6 at both ends of the lower housing. The sealing rings 5 ​​are semi-circular structures. Place the cable connector on the lower straightening clamp 43 of the lower straightening component. Then place the other half of the sealing rings 5 ​​on the cable 100, corresponding to the position of the already placed sealing rings 5. Lay the explosion-proof flame arresters 6 on the cable 100. Finally, cover the upper housing 1 onto the lower housing 2 and fix the upper housing 1 and the lower housing 2 with bolts. After splicing, the two ends of the upper housing 1 and the two ends of the lower housing 2 will be squeezed inward at the port. After splicing, sealant tape is wrapped around both ends of the port, so that the inner surface of the internal sealing rings 5 ​​abuts against the outer wall of the cable 100.

[0036] Finally, inject sealant into the interior through the glue inlet 11 on the upper shell 1. After the sealant has solidified, install the sealing cap 8 at the glue inlet to complete the installation operation.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof device for an aluminum-magnesium alloy cable connector, comprising an upper housing and a lower housing, wherein fixing plates are provided on both sides of the upper and lower housings, and two corresponding fixing plates are fixedly connected by multiple bolts, characterized in that... An upper straightening assembly is installed inside the upper housing, and a lower straightening assembly is installed inside the lower housing. The upper and lower straightening assemblies are positioned correspondingly. Explosion-proof flame arresters and sealing rings are sequentially installed from the inside to the outside at both ends of the upper and lower housings after they are connected.

2. The explosion-proof device for an aluminum-magnesium alloy cable connector according to claim 1, characterized in that... The upper housing is provided with a filling port for injecting sealant, and a sealing cap is threaded onto the filling port.

3. The explosion-proof device for an aluminum-magnesium alloy cable connector according to claim 1, characterized in that... The upper straightening assembly consists of an upper fixed plate, an upper support inclined plate, and an upper straightening clamping plate. The bottom of the upper fixed plate is attached to the inner wall of the upper housing. The upper fixed plate is fixedly installed inside the upper housing by screws. An upper straightening clamping plate is provided above the upper fixed plate. The upper straightening clamping plate is fixed to the upper fixed plate by the upper support inclined plate. Limiting slots are provided at both ends of the upper straightening clamping plate.

4. The explosion-proof device for an aluminum-magnesium alloy cable connector according to claim 3, characterized in that... The lower straightening assembly consists of a lower fixed plate, a lower support inclined plate, and a lower straightening clamping plate. The bottom of the lower fixed plate is attached to the inner wall of the lower housing. The lower fixed plate is fixedly installed inside the lower housing by screws. The lower straightening clamping plate is provided above the lower fixed plate. The lower straightening clamping plate is fixed to the lower fixed plate by the lower support inclined plate. Insert blocks are provided at both ends of the lower straightening clamping plate.

5. The explosion-proof device for an aluminum-magnesium alloy cable connector according to claim 4, characterized in that... The insert is adapted to the limiting slot and is inserted into the limiting slot.

6. The explosion-proof device for an aluminum-magnesium alloy cable connector according to claim 1, characterized in that... The inner cavity of the upper and lower housings after they are fixedly connected is equipped with a cable connector, and two cables extend from the ports at both ends of the connection between the upper and lower housings.

7. The explosion-proof device for an aluminum-magnesium alloy cable connector according to claim 6, characterized in that... The inner surface of the sealing ring abuts against the outer wall of the cable.

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